Answer: Amazon SDE Interview Question 2024-February | Advanced Backtracking | On-campus

Solution for Question 1: N-Queens Approach: Backtracking with State Arrays We place exactly one queen per row. The challenge is verifying if a cell is "under attack" by a previously placed queen. We could do an O(N) loop to check the board every time, but we can heavily optimize this using State Trackers! A queen attacks across its Column, its Positive Diagonal (Bottom-Left to Top-Right), and its Negative Diagonal (Top-Left to Bottom-Right). We can map these attacks mathematically into 3 ...